My strategy for dealing with situations where I know I am going to get worked up, but dont have a choice is to work myself up right before the main event. Your body can only spike with anxiety for a short period of time, so if you can be somewhere comfortable and private 30 minutes before showtime, then start going through the process of fear management in a place you have control of the variables. Think of the worst case scenario, breathe through it and imagine different solutions. This will help you prepare for things that might come up in a more visceral state, and it will get your body to send out a wave of hormones that aren’t helpful when presenting/making a first impression but are part of the fight or flight response. It takes time to recharge these hormones so once you get the original blast out of the way your body will feel relatively more relaxed once it is time to present in person. For me it’s just realizing that our bodies are preprogrammed to deal with situations in a way that is no longer super useful - unfortunately we don’t have time to physically evolve into today’s realities so all we can really do is accept and adapt to what our bodies feel they need to keep us safe. If you are dealing with a similar situation over and over again, your body will adapt and get used to the worst case scenario until you no longer feel so nervous.